| Gragnano to Oberkirch | 626.63 mi (1,008.47 km) |
| Gragnano to Obernburg am Main | 683.27 mi (1,099.62 km) |
| Gragnano to Obernkirchen | 839.10 mi (1,350.40 km) |
| Gragnano to Oberschleissheim | 541.71 mi (871.80 km) |
| Gragnano to Oberstdorf | 509.16 mi (819.41 km) |
| Gragnano to Obertraubling | 582.80 mi (937.93 km) |
| Gragnano to Obertshausen | 703.23 mi (1,131.74 km) |
| Gragnano to Oberursel | 716.64 mi (1,153.32 km) |
| Gragnano to Ochsenfurt | 655.23 mi (1,054.49 km) |
| Gragnano to Ochsenhausen | 557.08 mi (896.53 km) |
| Gragnano to Ochtrup | 867.28 mi (1,395.75 km) |
| Gragnano to Odenthal | 797.09 mi (1,282.79 km) |
| Gragnano to Oelde | 826.64 mi (1,330.35 km) |
| Gragnano to Oelsnitz | 681.11 mi (1,096.13 km) |
| Gragnano to Oer-Erkenschwick | 831.39 mi (1,338.00 km) |
